Overview

This manual describes the EIR feature for DSR. EIR is used to reduce the number of Global System for Mobile (GSM) handset thefts by providing a mechanism to assist network operators in preventing stolen or disallowed handsets from accessing the network. This control is accomplished by comparing the International Mobile Equipment Identity (IMEI) that is provided during handset registration to a set of three lists provided by the network operator:

• Black - Mobile Stations (MS) on the Blacklist are denied access to the network
• White - MS's on the Whitelist are allowed access to the network
• Gray - MS's on the Graylist are allowed on the network, but may be tracked

Additionally, the operator can perform IMSI (International Mobile Subscriber Identity) based screening. The operator can allow the black listed IMEI based on the IMSI by provisioning the IMSI along with IMEI.

EIR is an optional feature on DSR and can be enabled and disabled administratively.